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采用大型有限元ADINA程序 ,对电子束焊接接头残余应力分布规律进行了分析。结果表明 ,在焊缝根部存在较大的拉应力 ,容易形成焊缝根部裂纹 ,但焊缝外表面为压应力 ,可防止裂纹扩展到焊缝表面。
The large-scale finite element ADINA program was used to analyze the residual stress distribution of electron beam welded joints. The results show that there is a large tensile stress in the root of the weld, and the root crack in the weld is easy to form. However, the outer surface of the weld is compressive to prevent the crack from spreading to the weld surface.